Mention panel should consider window borders for positioning

[kaljak]

Type of report

I use CKEditor in a chat panel in the lower right corner of the website:

The mention panel is always shown below the typed word and so never shows up completely.

Provide detailed reproduction steps (if any)

1. Goto https://ckeditor.com/docs/ckeditor4/latest/examples/mentions.html
2. Type @ in CKEditor

Expected result

Mentions panel should be shown above the "@"

Actual result

Mentions panel is shown below the "@" and so not much of it is visible:

Other details

• Browser: Chrome
• OS: Windows 10
• CKEditor version: 4.13.0
• Installed CKEditor plugins: mentions

[Dumluregn]

Hello! Thank you for reporting. The behaviour you described is more of a feature request than bug, so I changed label of this issue. Direction detection for mentions seems possible to implement this with similar logic as used in our plugins using dropdowns, like Emoji plugin.

[tajinder-logiciel]

@Dumluregn @kaljak is there any solution for this behavior

[kaljak]

@tajinder-logiciel I couldn't find one 👎

[CKEditorBot]

Closed in #4266